This day includes data derived from the STEREO
space weather beacon telemetry, which is a very
low rate, highly compressed data stream broadcast
by the spacecraft 24 hours per day. These data
are used for space weather forecasting. Because
of the large compression factors used, these
beacon images are of much lower quality than the
actual science data.

The images above are shown in the order of the relative positions of the
three viewpoints (post-solar-conjunction), Ahead, Earth, and Behind. For the
Heliospheric Imager (HI) images below, the order is reversed to reflect the
fact that the HI Ahead telescopes look to the right of the Sun, and those on
Behind look to the left. Also, the HI images are not rotated to put solar
north up.